Published in Mittheilungen aus der Zoologischen Station zu Neapel, in 1888, in volume 8, pages 1-84

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Published in The Wilson Bulletin, in 1953, in volume 65, issue 3, pages 196

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 40, pages 582-588

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 38, pages 911-1005

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 39, pages 479-506

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 39, pages 637-672

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Published in Sitzungsberichte der Akademie der Wissenschaften Wien. math.-naturw. Cl., in 1860, in volume 40, pages 331-358

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Published in The Auk, in 1893, in volume 10, pages 231-236

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 38, pages 7-38

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Published in Biol Bull, in 1974, in volume 147, pages 186-202

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 38, pages 706-716

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Published in Biol Bull, in 1974, in volume 146, pages 44-55

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Published in Veliger, in 2005, in volume 47, pages 213-217

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1858, in volume 28, pages 365-461

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Published in The Wilson Journal of Ornithology, in 2007, in volume 119, issue 3, pages 400-409

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Published in Quart J Fla Acad Sci, in 1966, in volume 29, pages 60-66

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Published in Biol Bull, in 1983, in volume 164, pages 227-235

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Published in Madroño, in 2001, in volume 48, issue 2, pages 98-111

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Published in Gulf Research Reports, in 1976, in volume 5, issue 2, pages 46-47

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Published in Revue Suisse De Zoologie, in 1982, in volume 89, pages 845-850

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Published in Quarterly Journal of The Florida Academy of Sciences, in 1968, in volume 31, pages 143-149

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Published in Journal of Raptor Research, in 1997, in volume 31, issue 3, pages 267-272

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Published in Mittheilungen aus der Zoologischen Station zu Neapel, in 1903, in volume 16, pages 63-108

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Published in Zoological Science, in 1991, in volume 8, pages 899-903

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Published in Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere, in 1912, in volume 33, pages 379-420

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Published in Monitore Zoologico Italiano, in 1908, in volume 19, pages 102-104

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Published in Journal of The Bombay Natural History Society, in 1969, in volume 66, pages 401-403

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Published in Atti Della Societa Italiana Di Scienze Naturali E Del Museo Civico Di Storia Naturale Di Milano, in 1998, in volume 138, issue 1-2, pages 13-23

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1860, in volume 38, pages 326-333

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